Specialization in Psychology and Health Care Reform

This article begins by contextualizing specialization and board certification of psychologists, with attention paid to relevant definitions and expectations of other health care professionals. A brief history of specialization and board certification in professional psychology is offered. The benefits of board certification through the American Board of Professional Psychology are highlighted. Consideration is then given to the primary reasons for psychologists working in academic health sciences centers to specialize in the current health care climate and to obtain board certification as a mark of such specialization.     

Perceiving age and gender in unfamiliar faces: an fMRI study on face categorization

Efficient processing of unfamiliar faces typically involves their categorization (e.g., into old vs. young or male vs. female). However, age and gender categorization may pose different perceptual demands. In the present study, we employed functional magnetic resonance imaging (fMRI) to compare the activity evoked during age vs. gender categorization of unfamiliar faces. In different blocks, participants performed age and gender classifications for old or young unfamiliar faces (50% female respectively). Both tasks elicited activations in the bilateral fusiform gyri (fusiform face area, FFA) and bilateral inferior occipital gyri (occipital face area, OFA). Importantly, the same stimuli elicited enhanced activation during gender as compared to age categorization. This enhancement was significant in the right FFA and the left OFA, and may be related to increased configural processing. Our findings replicate and extend recent work, and shows that the activation of core components of the face processing network is strongly dependent on task demands.     

Audiovisual identity perception from naturally-varying stimuli is driven by visual information

Identity perception often takes place in multimodal settings, where perceivers have access to both visual (face) and auditory (voice) information. Despite this, identity perception is usually studied in unimodal contexts, where face and voice identity perception are modelled independently from one another. In this study, we asked whether and how much auditory and visual information contribute to audiovisual identity perception from naturally-varying stimuli. In a between-subjects design, participants completed an identity sorting task with either dynamic video-only, audio-only or dynamic audiovisual stimuli. In this task, participants were asked to sort multiple, naturally-varying stimuli from three different people by perceived identity. We found that identity perception was more accurate for video-only and audiovisual stimuli compared with audio-only stimuli. Interestingly, there was no difference in accuracy between video-only and audiovisual stimuli. Auditory information nonetheless played a role alongside visual information as audiovisual identity judgements per stimulus could be predicted from both auditory and visual identity judgements, respectively. While the relationship was stronger for visual information and audiovisual information, auditory information still uniquely explained a significant portion of the variance in audiovisual identity judgements. Our findings thus align with previous theoretical and empirical work that proposes that, compared with faces, voices are an important but relatively less salient and a weaker cue to identity perception. We expand on this work to show that, at least in the context of this study, having access to voices in addition to faces does not result in better identity perception accuracy.     

The role of human body movements in mate selection

It is common scientific knowledge, that most of what we say within a conversation is not only expressed by the words' meaning alone, but also through our gestures, postures, and body movements. This non-verbal mode is possibly rooted firmly in our human evolutionary heritage, and as such, some scientists argue that it serves as a fundamental assessment and expression tool for our inner qualities. Studies of nonverbal communication have established that a universal, culture-free, non-verbal sign system exists, that is available to all individuals for negotiating social encounters. Thus, it is not only the kind of gestures and expressions humans use in social communication, but also the way these movements are performed, as this seems to convey key information about an individual's quality. Dance, for example, is a special form of movement, which can be observed in human courtship displays. Recent research suggests that people are sensitive to the variation in dance movements, and that dance performance provides information about an individual's mate quality in terms of health and strength. This article reviews the role of body movement in human non-verbal communication, and highlights its significance in human mate preferences in order to promote future work in this research area within the evolutionary psychology framework.     

Inter- and intra-cultural variation in learning-through-participation among Hadza and BaYaka forager children and adolescents from Tanzania and the Republic of Congo

We examined cross-cultural variation in children’s learning-through-participation in economic work in two forager societies; the Hadza of Tanzania and the BaYaka of the Republic of Congo. We used observational data from 46 Hadza (41% female) and 65 BaYaka (48% female) children and adolescents between the ages of 3 and 18; interview data from 73 Hadza (49% female) and 52 BaYaka (56% female) adults; and ethnographic observations from both populations. Results showed that by providing tools, assigning chores, and foraging with children, Hadza and BaYaka adults provided opportunities for autonomous learning through facilitating participation. Furthermore, although both Hadza and BaYaka children foraged alongside adults when they could be of help, Hadza children were more likely than BaYaka children to forage independently, and BaYaka children were more likely than Hadza children to participate in domestic tasks. We argue that these strategies provided children with opportunities to learn while contributing economically.

Nous avons examiné les variations interculturelles dans l’apprentissage des enfants dans le contexte de leur participation à des travaux économiques dans deux sociétés de chasseurs-cueilleurs; les Hadza de Tanzanie et les BaYaka du Congo. Nous avons utilisé les données d’observation de 46 enfants et adolescents Hadza (41% femmes) et 65 BaYaka (48% femmes) âgés de 3 à 18 ans, celles d’interviews de 73 adultes Hadza (49% femmes) et de 52 adultes BaYaka (56% femmes), ainsi que des observations ethnographiques sur ces deux groupes. Les résultats montrent qu’en leur fournissant des outils, en leur assignant des tâches et en chassant et en cueillant avec les enfants, les adultes Hadza et BaYaka leur offrent des possibilités d’apprentissage autonome tout en facilitant leur participation. En outre, alors que les enfants Hadza et BaYaka chassent et cueillent aux côtés des adultes quand ils peuvent, les enfants Hadza sont plus susceptibles que les enfants BaYaka de recourir à la chasse et à la cueillette. Ces derniers sont aussi plus susceptibles que les enfants Hadza de participer aux tâches domestiques. Nous en concluons que ces stratégies fournissent aux enfants des opportunités d’apprentissage tout en contribuant, parallèlement, aux ressources économiques de leur groupe.     

How the Characteristics of Phonemes and Syllabic Structures can Impact the Phonological Awareness of Kindergarten and First-Grade Arabic-Speaking Children

Phonological awareness may be influenced by differences in the characteristics of the items studied. This hypothesis is considered particularly applicable to Arabic, which is a diglossic language. This study examined the impact of phonemic position and the affiliation of the items between spoken and standard languages on phonemic isolation tasks. The data were obtained from 310 native Arabic-speaking kindergarteners and first graders and revealed that for simple and complex monosyllabic pseudo-words, isolating initial phonemes was more difficult than isolating final phonemes. In addition, the items in the spoken language were easier than the items in the standard language for the children at both grade levels. Thus, certain phonological features of the standard language may not be sufficiently developed even after entrance to school, which may explain certain difficulties in reading development in Arabic. The results are discussed in relation to previous findings.     

Combined effects of inversion and feature removal on N170 responses elicited by faces and car fronts

The face-sensitive N170 is typically enhanced for inverted compared to upright faces. Itier, Alain, Sedore, and McIntosh (2007) recently suggested that this N170 inversion effect is mainly driven by the eye region which becomes salient when the face configuration is disrupted. Here we tested whether similar effects could be observed with non-face objects that are structurally similar to faces in terms of possessing a homogeneous within-class first-order feature configuration. We presented upright and inverted pictures of intact car fronts, car fronts without lights, and isolated lights, in addition to analogous face conditions. Upright cars elicited substantial N170 responses of similar amplitude to those evoked by upright faces. In strong contrast to face conditions however, the car-elicited N170 was mainly driven by the global shape rather than the presence or absence of lights, and was dramatically reduced for isolated lights. Overall, our data confirm a differential influence of the eye region in upright and inverted faces. Results for car fronts do not suggest similar interactive encoding of eye-like features and configuration for non-face objects, even when these objects possess a similar feature configuration as faces.     

The contributions of encoding,retention, and recall to the Hebb effect

The article reports an experiment testing whether the Hebb repetition effect—the gradual improvement of immediate serial recall when the same list is repeated several times—depends on overt recall of the repeated lists. Previous reports which suggest that recall is critical confound the recall manipulation with retention interval. The present experiment orthogonally varies retention interval (0 or 9 s) and whether the list is to be recalled after the retention interval. Hebb repetition learning is assessed in a final test phase. A repetition effect was obtained in all four experimental conditions; it was larger for recalled than non-recalled lists, whereas retention interval had no effect. The results show that encoding is sufficient to generate cumulative long-term learning, which is strengthened by recall. Rehearsal, if it takes place in the retention interval at all, does not have the same effect on long-term learning as overt recall.